Search: id:A046259
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%I A046259
%S A046259 9,11,21,21,23,33,37,93,119,129,133,147,293,321,429,433,497,627,661,
%T A046259 897,1161,1187,1197,1711,1769,1807,2097,2099,4143,4149,4197,4587,4587,
%U A046259 5629,5711,5889,6153,6351,6399,6511,6651,7179,7563,7661,8071,8163,9663
%N A046259 a(1) = 9; a(n) is smallest number >= a(n-1) such that the juxtaposition 
               a(1)a(2)...a(n) is a prime.
%t A046259 a[1] = 9; a[n_] := a[n] = Block[{k = a[n - 1], c = IntegerDigits @ Table[ 
               a[i], {i, n - 1}]}, While[ !PrimeQ[ FromDigits @ Flatten @ Append[c, 
               IntegerDigits[k]]], k += 2]; k]; Table[ a[n], {n, 48}] (from Robert 
               G. Wilson v (rgwv(at)rgwv.com), Aug 05 2005)
%Y A046259 Cf. A069611, A074345, A033680, A033679, A033681, A046254, A046255, A046256, 
               A046257, A046258, A111524.
%Y A046259 Sequence in context: A077788 A137018 A090771 this_sequence A074345 A022323 
               A106525
%Y A046259 Adjacent sequences: A046256 A046257 A046258 this_sequence A046260 A046261 
               A046262
%K A046259 nonn
%O A046259 1,1
%A A046259 Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.

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